Mary Ann's Bum

Mary ann's bum is decidedly bigger. And, she is clearly clunkier: she clunked down on a perch so hard it shook, whereas sutcliffe simply hops gently onto the same perch. I suspect she is pregnant. However, she has not even set foot in the nest box. I certainly hope that all works out, and that she doesn't get any egg binding, which is a seriously dangerous situation.